[Bug?]: The default compression level is not 'mixed'

[trivikr]

Self-service

• I'd be willing to implement a fix

Describe the bug

As per the documentation, the default value for compressionLevel is mixed.

But my testing shows that it's 0 by default in 4.0.0.
It was mixed in yarn 3.6.4.

Is this a breaking change in [email protected]?

To reproduce

$ corepack enable

$ yarn --version
4.0.0

$ yarn init -2

$ yarn config compressionLevel
└─ compressionLevel
   ├─ Description: Zip files compression level, from 0 to 9 or mixed (a variant of 9, which stores some files uncompressed, when compression doesn't yield good results)
   ├─ Source: <default>
   └─ Value: 0

$ yarn set version 3.6.4

$ yarn --version
3.6.4

$ yarn config | grep compressionLevel
➤ YN0000: compressionLevel              'mixed'

Environment

System:
    OS: macOS 14.0
    CPU: (8) arm64 Apple M1 Pro
  Binaries:
    Node: 18.18.0 - /private/var/folders/42/54jl1_3x4hz06cf7bc_kzd4h0000gn/T/xfs-bf3e2b66/node
    Yarn: 4.0.0 - /private/var/folders/42/54jl1_3x4hz06cf7bc_kzd4h0000gn/T/xfs-bf3e2b66/yarn
    npm: 9.8.1 - ~/Library/Caches/fnm_multishells/36083_1698158145925/bin/npm

Additional context

No response

[trivikr]

This does not appear to be a bug, and the documentation needs to be updated.

The default compressionLevel was explicitly set to 0 in #5526